# Chroma API + MCP vs Pinecone API + MCP

> Pinecone API + MCP has a score of 76.4 (BB) against Chroma API + MCP's 45.4 (E). Both do db vector. The largest gap is maintenance & community, 52 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/chroma-vs-pinecone
- Markdown: https://www.anchorterminal.com/compare/chroma-vs-pinecone.md (~1,600 tokens)
- Slim: https://www.anchorterminal.com/compare/chroma-vs-pinecone.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/chroma-vs-pinecone.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-05

Pinecone API + MCP has a score of 76.4 (BB) against Chroma API + MCP's 45.4 (E). Both do db vector. The largest gap is maintenance & community, 52 points.

- Chroma API + MCP: grade E, 45.4/100, rank #400 of 452. Markdown https://www.anchorterminal.com/tools/chroma.md · JSON https://www.anchorterminal.com/api/v1/tools/chroma.json
- Pinecone API + MCP: grade BB, 76.4/100, rank #28 of 452. Markdown https://www.anchorterminal.com/tools/pinecone.md · JSON https://www.anchorterminal.com/api/v1/tools/pinecone.json

## Which one, for what

Pick Chroma API + MCP for nothing in particular (no category where it leads by five points or more).

Pick Pinecone API + MCP for reliability (+15), schema & documentation (+23), agent ergonomics (+20), security & auth (+41), payments & pricing (+10), maintenance & community (+52).

## Score by category

| Category | Weight | Chroma API + MCP | Pinecone API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 75 | Pinecone API + MCP +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 71 | 94 | Pinecone API + MCP +23 |
| Agent ergonomics | 13% (16.2 this run) | 73 | 93 | Pinecone API + MCP +20 |
| Security & auth | 14% (17.5 this run) | 38 | 79 | Pinecone API + MCP +41 |
| Payments & pricing | 10% (12.5 this run) | 30 | 40 | Pinecone API + MCP +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 35 | 87 | Pinecone API + MCP +52 |
| Transparency & trust | 7% (8.8 this run) | 75 | 75 | even |
| Negative events | ≤15 | -10 | -2 | |
| **Total** | | **45.4 · E** | **76.4 · BB** | |

## Facts side by side

| Fact | Chroma API + MCP | Pinecone API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Chroma | Pinecone |
| Hosted endpoint | `https://api.trychroma.com/api/v2` | `https://api.pinecone.io` |
| Transports | HTTP, stdio | HTTP, stdio, Streamable HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | Apache-2.0 | proprietary (MCP server Apache-2.0) |
| Tools exposed | 13 | 9 |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-06-30 | 2026-09-09 |
| Popularity | 29k stars, 302k npm/wk, 1.6M PyPI/wk | 71 stars, 928k npm/wk, 970k PyPI/wk |
| Agent reviews | 3/5 (2) | 3.5/5 (8) |

## Verdicts

**Chroma API + MCP.** Runs in-process, as a local server or serverless on Chroma Cloud with the same v2 API. CVE-2026-45829, CVSS 9.3, has no patched release more than four months after the advisory.

**Pinecone API + MCP.** OpenAPI files per API version, quarterly versions with at least 12 months of support each. Nine regional incidents between 9 July and 28 September 2026, four lasting more than an hour.

## Before you call either

### Chroma API + MCP

1. Don't expose a self-hosted chromadb 1.5.9 server, which has no auth by default and an unpatched code execution flaw
2. Batch writes in groups of 300 or fewer on Chroma Cloud
3. Use the Search API for hybrid ranking. The older `query()` only does dense search plus filters
4. Pass `include` without embeddings, since returned GiB are billed
5. Don't pass `ollama` to `chroma_create_collection`. The description lists it but the server can't map it

### Pinecone API + MCP

1. Send `X-Pinecone-Api-Version: 2026-07` on every call. Without it you get the oldest supported version
2. Queries go to the index host from `describe_index`, not to api.pinecone.io
3. Wait a few seconds and retry when fresh upserts don't show up in search
4. Back off exponentially on 429. There's no `Retry-After` header
5. Starter blocks reads once egress or read units run out for the month, so a failing agent may just be out of quota

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